AND ANIMAL LIFE. 121 



CHAP. V, 



Temperature at Different Ages. 



CXXV1I. THE present subject is one of great 

 interest and importance. The principles by which 

 we shall be guided in the investigation are con- 

 nected with those which have been already stated, 

 and will strengthen materially the reasoning pre- 

 viously employed. 



CXXVIII. The temperature of the body at 

 different ages has occupied very much the atten- 

 tion of Dr EDWAUDS of Paris. Indeed, the ex- 

 periments which he performed to elucidate this 

 subject, and the consideration and application of 

 the laws which he deduced from them, compose 

 at least one-third of his work, which is un- 

 doubtedly the best in any language for the mul- 

 tiplicity, variety, and accuracy of experiments ; 

 but these, unless they lead to general laws, or 

 unless they are brought forward to support such, 

 are of little consequence, except in so far as they 

 enable others to think. 



CXXIX. In the chapter on secretion, I have 

 shown how WILSON PHILIP was mistaken in his 

 opinions concerning the dependence of digestion 

 on the eighth pair of nerves, from judging by ef- 

 fects, without taking into account, in any single 

 instance, the general disturbance induced in the 



